Work-positioning device for wood-heel jacks



June- 10, 1930'. w; H. HALL 1,762,296

WORK BOS-ITIONING DEVICE F-OR WOOD HEEL JACKS Filed Jan. 4, 1928 2Sheets-Sheet 1,

W. H. HALL WORK POSITIONING DEVICE FOR WOOD HEEL JACKS Jli ne 10; 1930.

2 Sheets-Sheet 2 Filed Jan. 4-, 1928 Patented June 1@, 1930 unin srArEsPATNT FFICE WALTER H. HALL, OF WINOHENDON. MASSACHUSETTS, ASSIGNOR, BYMESNE ASSIG'N- MENI'S, TO UNITED SHOE MACHINERY CORPORATION, OFPATERSON, NEW JERSEY,

A CORPORATION NEW JERSEY WORK-POSITIONING DEVICE FOR WOOD-HEEL JAGKSApplication filed January 4, 1928. Serial No. 244,530.

This invention relates to heel making machines and is illustrated asembodied in a wood heel turning machine of the type disclosed in UnitedStates Letters Patent No. 1,488,534l, granted April 1, 1921, onapplication of Folsom, Vinton and lVhitney. 1

Machines of this type are provided with two rotary cutters and a jackfor holding a heel blank, the blank being swung past one cutter by thejack to make a cut around one side of the heel blank from breast to backand then past the other cutter tocut around the other side of the blank.It has been customary to clamp the heel blank in the jack by itstop-lift and heel-seat surfaces and to gage it only by a gage at itsbreast surface, since the lateral and rear surfaces of the blank were tobe trimmed by the cutter.

The invention of A. F, Cook disclosed in his application SerialNo. 274,58 3, filed May 2, 1928, provided, in addition to the usual breast gage,a side gage arranged to contact with a lateral face of a Wood heel blankand removable from operative position after the blank had been gaged topermit the trimming cutter to form the lateral heel surface on theblank, the gage being moved from operative to inoperative position by ahandle, thus insuring proper relationship between the side and breastsurfaces formed on the blank. It is an object of this invention toprovide a still further improved construction of the type provided bythe invention of Cook. To this end I have provided an organizationcomprising, as illustrated, a side gage sliding from operative toinoperative position, thus simplifying to a considerable degree theconstruction and operation of the machine. Advantageously also, thehandle used to operate the gage is used also to clamp the heel blank andto turn the jack.

The specific construction of the jack shown herein is not claimed inthis application but forms the subject matter of a divisional apwillbehereinafter described and more particularly set forth in the appendedclaims.

A preferred form of the invention is shown in the drawings in which Fig.1 is aside elevation of my improved jack and gauge;

Fig. 2- is a sectional plan view, taken along the line 2-2 in Fig. 1

Figs. 3 and 4 are views similar to Figs. 1 and 2, but showing the partsin a different position; and

Fig. 5 is a detail sectional view, taken along the line 5-5 in Fig. 3.

Referring to the drawings, my improved jack comprises a frame member 10,secured to the upper end of a supporting shaft 11 and having swingingmovement about the axis of said shaft. A heel blank support 12 ispivoted at 18 to the member 10. The support 12 has a bearing portion 14:engaging a cam member 15 and angularly movably thereby as the jack isswung about the axis of the shaft 11.

A frame member 17 is secured to the support 12 and extends upwardtherefrom.

The heel blank B rests on a serrated plate 20 (Fig. 2) on the support12, and the upper surface of the heel blank is engaged by a clamping bar21 having a cross pin or stud 22 loosely pivoted in a slot 23 in theframe me1nber 17 A hand lever 25 is pivoted at 26 on a lever 27, whichin turn is pivoted at 28 to the frame member 17. A cam roll 80 on thehand lever 25 engages the upper surfaceof the clamping bar 21 as thehandle is swung downward and forces the clamping bar against the uppersurface of the heel blank B.

An adjusting screw 32 is threaded inthe upper end of the frame member 17and acts as 3 theside of the heel blank, which is indicated in brokenlines at B in Fig. 2.

A bell crank 47 (Fig. 1) is pivoted at 48 on the support 12, and one armof the bell crank 47 extends upward through a slot or opening 49 (F ig.2) in the guide bar 42, and the other arm of the bell crank is connectedto the lower end of a link 50. The link 50 is provided with an elongatedslot '51 toward its upper end, through which extends a .stud 52 in theouter end of an arm 53 pivoted at 54 on-the hand lever 25. The arm 53has a segmental slot 56 through which extends a clamping screw 57threaded in the hand lever 25. The position of the stud 52 may thus beconveniently adjusted relative to the hand lever 25 by loosening thescrew 51 and swinging'the arm 53 on its pivot 54. molding cutter isindicated diagrammatically' at C (Fig. 1 and a usual breast gage at 60,(Figs. 2 and 3).

Having described the details of construction of my improved jack, andside gauge therefor, the method of operation will be readily apparent.When the jack is open to permit removal and replacement of heel blanks,the hand lever 25 is in the raised position indicatedin Fig. 1 and thebell crank 47 is moved to advance the side gauge block 43 to operativeposition. This movement takes place as the hand lever 25 approaches itsuppermost position, in which position the pressure of the cam roll 30 onthe clamping bar 21 is also released.

' The finished heel blank B may then be removed and a new blank B may beinserted and accurately positioned laterally by the gauge block 43. Theusual breast gage 60 (Fig. 2) at the same time engages the front edge ofthe blank, which isthus accurately positioned in two directions.

The hand lever 25 is then moved downward to the position indicated inFig. 3 .and as the lever approaches its lower limit of travel, the gaugeblock 43 is slid back to the position indicated in Figs. 3' and 4. Itwill be noted that the lost motion connection allows the gauge block toremain in forward or operative position until the clamping bar 21engages the blank B, thus holding the same from displacement as thegauge block 43 is withdrawn.

The handle 25 is then used to swing the jack, with its clamped heelblank, around against the cutter C to form a lateral and rear surface onthe blank,,as will be understood from the Letters Patent referred to.

By the use of my improved side gauge, the blocks may be more accuratelypositioned and consequently smaller blocks may be used, as lessclearance at the sides is necessary than in the previous practice.

Having thus described my invention and the advantages thereof, I do notwish to be,

limited'to the details herein disclosed otherwise than as set forth inthe claims, but what I claim is 1. In a wood heel jack, a heel blanksupport, means to open and close said jack relative to said support, anda side gauge for a heel blank on said support, said gauge being slidableforward to operative position adja cent said support and being slidablerearward to a position permitting unobstructed cutting operations on thesides of the heel blank.

2. In a wood heel jack, a heel blank support, actuating means to openand close said jack relative to said support, a side gauge for a heelblank on said support, and a connection from said actuating means tosaid gauge rectilinearly effective to move said gauge forward andrearward as said actuating means is moved to open and close said jack,said connection including a lost motion element, whereby said gauge willbe moved in each direction as the actuating means approaches its limitof travel in the corresponding direction.

3. In a wood heel jack, a heel blank support, actuating means to openand close said jack relative to said support, a side gauge for a heelblank on said support, a connection from said actuating means to saidgauge effective to move said gauge forward and rearward as said jack isopened and closed, and

means to adjust the forward limit of travel of said gauge.

4. In a wood heel jack, a heel blank support, a hand lever to open andclose said jack relative to said support a side gauge for a heel blankon said support, and a connection from said hand lever to said gaugeeffective to move said gauge rectilinearly forward and rearward as saidhand lever is moved to open and close said jack.

In testimony whereof I have hereunto af fixed my signature.

WALTER H. HALL.

CERTiFICATE OF CORRECTION.

Patent No. 1,762,296. 7 Granted June 10, 1930, to

WALTER H. HALL.

it is hereby certified that error appears in the printed specificationof the above numiiererl patent requiring correction as follows: Page 2,line 81, claim 2, strike out ihe word "rectilinearly" and insert same tofollow "gauge" same line and claim; and that the said Letters Patentshould be read with this correction theroiu that the same may conform tothe record of the case in the Patent fiffice.

Signed am? seaied this 6th day of January, A. I). 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents.

